EP 2132138 A1 20091216 - A PROCESS FOR THE PRODUCTION OF CYANIDES
Title (en)
A PROCESS FOR THE PRODUCTION OF CYANIDES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON CYANIDEN
Title (fr)
PROCÉDÉ POUR LA PRODUCTION DE CYANURES
Publication
Application
Priority
- NO 2008000077 W 20080303
- NO 20071153 A 20070301
Abstract (en)
[origin: WO2008105669A1] A reactor for converting methane, ammonia and oxygen and alkaline or alkaline earth hydroxides into alkaline or alkaline earth cyanides by two-stage reactions comprising a first stage with a gas inlet (I), wherein the first stage is formed by a cone (H) with distribution plates (G) providing an even gas distribution over the catalyst material (C) wherein the distribution plates (G) are located between the gas inlet (I) of the reactor and the distribution plates (G) being perforated with a number of holes, with the distribution plates spaced from each other in the flow direction of the gas, the first distribution plate(s) (Ga) functioning mainly to distribute the gas whereas the last distribution plate (G?) works as a heat radiation shield and as a distribution plate facing the catalyst gauze (C), and wherein the catalyst gauze (C) is present in the form of catalyst gauze(s) (C) fixed by catalyst weights (B) supports an improved process for the synthesis of HCN/NaCN by the vapor-phase reaction of ammonia, methane and oxygen followed by the absorption of the product gas by sodium hydroxide to produce sodium cyanide. The yield of HCN/NaCN may be increased by the improvement of the reactor system, to an ammonia and methane conversion of more than 75%. Typically the conversion of ammonia and methane to sodium cyanide with a reactor according to the invention is more than 90%.
IPC 8 full level
C01C 3/02 (2006.01); B01J 8/02 (2006.01); B01J 12/00 (2006.01)
CPC (source: EP US)
B01J 8/009 (2013.01 - EP US); B01J 8/025 (2013.01 - EP US); B01J 8/0278 (2013.01 - EP US); C01C 3/0225 (2013.01 - EP US); C01C 3/08 (2013.01 - EP US); C01C 3/10 (2013.01 - EP US); B01J 2208/00849 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008105669 A1 20080904; BR PI0808036 A2 20140617; CA 2679425 A1 20080904; EA 019525 B1 20140430; EA 200970809 A1 20100430; EP 2132138 A1 20091216; EP 2132138 A4 20111130; US 2010098603 A1 20100422; US 8133458 B2 20120313
DOCDB simple family (application)
NO 2008000077 W 20080303; BR PI0808036 A 20080303; CA 2679425 A 20080303; EA 200970809 A 20080303; EP 08723969 A 20080303; US 52951208 A 20080303